<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">Login Form</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="Username"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="Password"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon
            :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
          />
        </span>
      </el-form-item>

      <el-button
        :loading="loading"
        type="primary"
        style="width: 100%; margin-bottom: 30px"
        @click.native.prevent="handleLogin"
      >Login</el-button>

      <div class="tips">
        <span style="margin-right: 20px">username: admin</span>
        <span>password: 123456</span>
      </div>
    </el-form>
  </div>
</template>

<script>
import loginApi from '@/api/login'
import { setToken, setUserInfo } from '@/utils/myAuth'
export default {
    name: 'Login',
    data() {
        const validatePassword = (rule, value, callback) => {
            if (value.length < 6) {
                callback(new Error('The password can not be less than 6 digits'))
            } else {
                callback()
            }
        }
        return {
            loginForm: {
                username: 'admin',
                password: '123456'
            },
            loginRules: {
                username: [
                    { required: true, trigger: 'blur' }
                ],
                password: [
                    { required: true, trigger: 'blur', validator: validatePassword }
                ]
            },
            loading: false,
            passwordType: 'password',
            redirect: undefined
        }
    },
    watch: {
        $route: {
            handler: function(route) {
                this.redirect = route.query && route.query.redirect
            },
            immediate: true
        }
    },
    methods: {
        showPwd() {
            if (this.passwordType === 'password') {
                this.passwordType = ''
            } else {
                this.passwordType = 'password'
            }
            this.$nextTick(() => {
                this.$refs.password.focus()
            })
        },
        handleLogin() {
            loginApi
                .doLogin({
                    ...this.loginForm
                })
                .then((res) => {
                    if (res.success) {
                        // 1.获取用户信息
                        var token = res.data.token
                        var info = res.data.userInfo
                        // 2. 存储用户信息和token  存到哪？  如果用户信息频繁变化建议存储ls/vuex ； 如果不经常变化直接存储ls
                        // window.localStorage.setItem("token", token);
                        setToken(token)
                        setUserInfo(info)
                        this.$router.push({ path: '/' })
                    } else {
                        this.$message.error('登陆失败！')
                    }
                })
        },
        handleLogin2() {
            this.$refs.loginForm.validate((valid) => {
                if (valid) {
                    this.loading = true
                    this.$store
                        .dispatch('user/login', this.loginForm)
                        .then(() => {
                            this.$router.push({ path: this.redirect || '/' })
                            this.loading = false
                        })
                        .catch(() => {
                            this.loading = false
                        })
                } else {
                    console.log('error submit!!')
                    return false
                }
            })
        }
    }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
